Motor Oil; SAE 50; 5 Gallon Pail; Royal Purple's API-licensed Motor Oil combines premium base oils with proprietary additive technologies to create high performance synthetic oil that optimizes engine performance. Our motor oil delivers superior protection and improves performance in gasoline and diesel engines. Upgrade your vehicle to Royal Purple synthetic oil and feel the difference. Royal Purple synthetic motor oils meet warranty requirements of most passenger car and light trucks sold in the U.S./North America. No special procedures are necessary when upgrading to Royal Purple. Royal Purple recommends waiting until the manufacturer's first scheduled oil change in new gasoline and diesel engines before upgrading to Royal Purple. Royal Purple motor oil is compatible with synthetic and conventional motor oils. Performance Advantages: Better wear protection Enhanced additive technology prevents metal-to-metal contact beyond both dexos1™ and ILSAC GF-5 specs Increased fuel efficiency A low coefficient of friction results in optimized fuel efficiency (the fuel economy of our 5W-30 meets the fuel economy requirements of a 5W-20 oil) Better protection of the expensive catalytic emission system Patented ZDDP additives optimize emissions catalyst system life Improved compatibility with fuels containing ethanol Patented additive technology prevents the white sludge and lubrication starvation that can occur with 20% or higher ethanol fuel Superior corrosion protection No rust observed in standard industry testing Brand Information Royal Purple(R) manufactures a wide range of high performance, synthetic lubricants for every use from top fuel dragsters to the family car, motorcycles, trucks, RVs and boats. Its industry experts are consistently developing products that outperform leading mineral-based and synthetic lubricants in performance and protection.